What is a composite entity, and when is it used?
Answer to relevant QuestionsHow is a composite entity represented in an ERD, and what is its function? Illustrate the Crow’s Foot model.Create an ERD based on the Crow’s Foot model, using the following requirements:An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales ...What is a specialization hierarchy?When implementing a 1:1 relationship, where should you place the foreign key if one side is mandatory and one side is optional? Should the foreign key be mandatory or optional?Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate.Granite Sales Company keeps information on employees and the departments that they work in. For each ...
Post your question